preserve parentheses for JSDoc type casting with extra spaces a… (#7011)

changelog_unreleased/javascript/pr-7011.md

@@ -0,0 +1,18 @@
+#### Preserve parentheses for JSDoc type casting with extra spaces and asterisk at end ([#7011](https://github.com/prettier/prettier/pull/7011) by [@evilebottnawi](https://github.com/evilebottnawi))
+
+Formatting of comments in labeled statements was not stable
+
+<!-- prettier-ignore -->
+```javascript
+// Input
+const foo = /** @type {!Foo} **/ (baz);
+const bar = /** @type {!Foo}  * * */(baz);
+
+// Prettier stable
+const foo = /** @type {!Foo} **/ baz;
+const bar = /** @type {!Foo}  * * */ baz;
+
+// Prettier master
+const foo = /** @type {!Foo} **/ (baz);
+const bar = /** @type {!Foo}  * * */ (baz);
+```

src/language-js/needs-parens.js

@@ -53,7 +53,7 @@ function hasClosureCompilerTypeCastComment(text, path) {
     const cleaned = comment
       .trim()
       .split("\n")
-      .map(line => line.replace(/^[\s*]+/, ""))
+      .map(line => line.replace(/^[\s*]+/, "").replace(/[\s*]+$/, ""))
       .join(" ")
       .trim();
     if (!/^@type\s*\{[^]+\}$/.test(cleaned)) {

tests/comments_closure_typecast/__snapshots__/jsfmt.spec.js.snap

@@ -156,3 +156,31 @@ const v8 = /**@type{string} */ (value);
 
 ================================================================================
 `;
+
+exports[`extra-spaces-and-asterisks.js 1`] = `
+====================================options=====================================
+parsers: ["babel"]
+printWidth: 80
+                                                                                | printWidth
+=====================================input======================================
+const foo1 = /** @type {!Foo} */(bar);
+const foo2 = /** @type {!Foo} **/(bar);
+const foo3 = /** @type {!Foo} * */(bar);
+const foo4 = /** @type {!Foo} ***/(bar);
+const foo5 = /** @type {!Foo} * * */(bar);
+const foo6 = /** @type {!Foo} *****/(bar);
+const foo7 = /** @type {!Foo} *   *   *   *   */(bar);
+const foo8 = /** @type {!Foo}    ** *   *   */(bar);
+
+=====================================output=====================================
+const foo1 = /** @type {!Foo} */ (bar);
+const foo2 = /** @type {!Foo} **/ (bar);
+const foo3 = /** @type {!Foo} * */ (bar);
+const foo4 = /** @type {!Foo} ***/ (bar);
+const foo5 = /** @type {!Foo} * * */ (bar);
+const foo6 = /** @type {!Foo} *****/ (bar);
+const foo7 = /** @type {!Foo} *   *   *   *   */ (bar);
+const foo8 = /** @type {!Foo}    ** *   *   */ (bar);
+
+================================================================================
+`;

tests/comments_closure_typecast/extra-spaces-and-asterisks.js

@@ -0,0 +1,8 @@
+const foo1 = /** @type {!Foo} */(bar);
+const foo2 = /** @type {!Foo} **/(bar);
+const foo3 = /** @type {!Foo} * */(bar);
+const foo4 = /** @type {!Foo} ***/(bar);
+const foo5 = /** @type {!Foo} * * */(bar);
+const foo6 = /** @type {!Foo} *****/(bar);
+const foo7 = /** @type {!Foo} *   *   *   *   */(bar);
+const foo8 = /** @type {!Foo}    ** *   *   */(bar);